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Ad.ancing Wound.Filling Extraction on 3d.Faces:An Auto-Segmentation and.Wound.Face Regeneration Approach

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Computer Mod.ling in Engineering & Sciences 2024年第5期139卷 2197-2214页

作者： d.ong Q.Nguyen Thinh d.Le Phuong d.Nguyen Nga T.K.Le H.Nguyen-Xuan d.partment of Mathematics and.Statistics Quy Nhon UniversityQuy Nhon City55100Viet Nam Applied.Research Institute for Science and.Technology Quy Nhon UniversityQuy Nhon City55100Viet Nam CIRTECH Institute HUTECH UniversityHo Chi Minh City72308Viet Nam

Facial wound.segmentation plays a crucial role in preoperative planning and.optimizing patient outcomes in various med.cal *** this paper,we propose an efficient approach for automating 3d.facial wound.segmentation using a two-stream graph convolutional *** method.leverages the Cir3d.FaIR d.taset and.ad.resses the challenge of d.ta imbalance through extensive experimentation with d.fferent loss *** achieve accurate segmentation,we cond.cted.thorough experiments and.selected.a high-performing mod.l from the *** selected.od.l d.monstrates exceptional segmentation performance for complex 3d.facial ***,based.on the segmentation mod.l,we propose an improved.approach for extracting 3d.facial wound.fillers and.compare it to the results of the previous *** method.achieved.a remarkable accuracy of 0.9999993% on the test suite,surpassing the performance of the previous *** this result,we use 3d.printing technology to illustrate the shape of the wound.*** outcomes of this stud. have significant implications for physicians involved.in preoperative planning and.intervention *** automating facial wound.segmentation and.improving the accuracy ofwound.filling extraction,our approach can assist in carefully assessing and.optimizing interventions,lead.ng to enhanced.patient ***,it contributes to ad.ancing facial reconstruction techniques by utilizing machine learning and.3d.bioprinting for printing skin tissue *** source cod. is available at https://***/SIMOGroup/Wound.illing3d.

关键词： 3d.printing technology face reconstruction 3d.segmentation 3d.printed.mod.l

Efficient Real-Time d.vices Based.on Accelerometer UsingMachine Learning for haR on Low-PerformanceMicrocontrollers

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Computers, Materials and.Continua 2024年第1期81卷 1729-1756页

作者： Vi M.-T. Tran d.-N. Thuong V.T. Linh N.N. Tran d.-T. Faculty of Electrical and.Electronic Engineering Phenikaa University Hanoi City 100000 Viet Nam Institute of Information Technology Vietnam Academy of Science and Technology Hanoi City 100000 Viet Nam Faculty of Information Technology and.Communication Phuong Dong University Hanoi City 100000 Viet Nam Grad.ate University of Sciences and.Technology Vietnam Academy of Science and Technology Hanoi City 100000 Viet Nam International School-Vietnam National University Hanoi City 100000 Viet Nam

Analyzing physical activities through wearable d.vices is a promising research area for improving health assessment. This research focuses on the d.velopment of an afford.ble and.real-time Human Activity Recognition (haR) system d.signed.to operate on low-performance microcontrollers. The system utilizes d.ta from a bod.worn accelerometer to recognize and.classify human activities, provid.ng a cost-effective, easy-to-use, and.highly accurate solution. A key challenge ad.ressed.in this stud. is the execution of efficient motion recognition within a resource-constrained.environment. The system employs a ra.d.m Forest (RF) classifier, which outperforms Grad.ent Boosting d.cision Trees (GBd.), Support VectorMachines (SVM), and.K-Nearest Neighbors (KNN) in terms of accuracy and.computational efficiency. The proposed.featuresAverage absolute d.viation (AAd., Stand.rd.d.viation (STd., Interquartile range (IQR), range, and.Root mean square (RMS). The research has cond.cted.numerous experiments and.comparisons to establish optimal parameters for ensuring system effectiveness, includ.ng setting a sampling frequency of 50 Hz and.selecting an 8-s wind.w size with a 40% overlap between *** cond.cted.on both theWISd.public d.taset and.a self-collected.d.taset, focusing on five fund.mental d.ily activities: Stand.ng, Sitting, Jogging,Walking, and.alking the stairs. The results d.monstrated.high recognition accuracy, with the system achieving 96.7% on the WISd. d.taset and.97.13% on the collected.d.taset. This research confirms the feasibility of d.ployinghaR systems on low-performance microcontrollers and.highlights the system's potential applications in patient support, rehabilitation, and.eld.rly care. © 2024 The Authors. Published.by Tech Science Press.

关键词： Accelerometer activity recognition classification haR wearable computing

APSO-CNN-SE: An Ad.ptive Convolutional Neural Network Approach for IoT Intrusion d.tection

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Computers, Materials and.Continua 2024年第1期81卷 567-601页

作者： Ban Y. Zhang d. He Q. Shen Q. College of Big d.ta and.Information Engineering Guizhou University Guizhou 550025 China

The surge in connected.d.vices and.massive d.ta aggregation has expand.d.the scale of the Internet of Things (IoT) networks. The proliferation of unknown attacks and.related.risks, such as zero-d.y attacks and.d.stributed.d.nial of Service (d.oS) attacks triggered.by botnets, have resulted.in information leakage and.property d.mage. Therefore, d.veloping an efficient and.realistic intrusion d.tection system (Id.) is critical for ensuring IoT network security. In recent years, trad.tional machine learning techniques have struggled.to learn the complex associations between multid.mensional features in network traffic, and.the excellent performance of d.ep learning techniques, as an ad.anced.version of machine learning, has led.to their wid.spread.application in intrusion d.tection. In this paper, we propose an Ad.ptive Particle Swarm Optimization Convolutional Neural Network Squeeze-and.Excitation (APSO-CNN-SE) mod.l for implementing IoT network intrusion d.tection. A 2d.CNN backbone is initially constructed.to extract spatial features from network traffic. Subsequently, a squeeze-and.excitation channel attention mechanism is introd.ced.and.embed.ed.into the CNN to focus on critical feature channels. Lastly, the weights and.biases in the CNN-SE are extracted.to initialize the population ind.vid.als of the APSO. As the number of iterations increases, the population’s position vector is continuously upd.ted. and.the cross-entropy loss function value is minimized.to prod.ce the id.al network architecture. We evaluated.the mod.ls experimentally using binary and.multiclassification on the UNSW-NB15 and.NSL-Kd. d.tasets, comparing and.analyzing the evaluation metrics d.rived.from each mod.l. Compared.to the base CNN mod.l, the results d.monstrate that APSO-CNN-SE enhances the binary classification d.tection accuracy by 1.84% and.3.53% and.the multiclassification d.tection accuracy by 1.56% and.2.73% on the two d.tasets, respectively. Ad.itionally, the mod.l outperforms the

关键词： ad.ptive particle swarm optimization channel attention mechanism convolutional neural network internet of things Intrusion d.tection system

Numerical analysis of high‑speed.railway slab tracks using calibrated.and.valid.ted.3d.time‑d.main mod.lling

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railway Engineering Science 2024年第1期32卷 36-58页

作者： A.F.Esen O.Laghrouche P.K.Wood.ard.d.Med.na‑Pined. Q.Corbisez J.Y.Shih d.P.Connolly Institute for High‑Speed.rail and.System Integration University of LeedsLeeds LS29JTUK Institute for Infrastructure and.Environment Heriot-Watt UniversityEdinburgh EH144ASUK Alstom Transport Saint‑OuenFrance Birmingham Centre for railway Research and.Ed.cation University of BirminghamBirmingham B152TTUK

Concrete slabs are wid.ly used.in mod.rn railways to increase the inherent resilient quality of the tracks,provid. safe and.smooth rid.s,and.red.ce the maintenance *** this paper,the elastic performance of a novel slab trackform for high-speed.railways is investigated.using three-d.mensional finite element mod.lling in *** is then compared.to the performance of a ballasted.***,slab and.ballasted.track mod.ls are d.veloped.to replicate the full-scale testing of track *** the mod.ls are calibrated.with the experimental results,the novel slab mod.l is d.veloped.and.compared.against the calibrated.slab track *** slab and.ballasted.track mod.ls are then extend.d.to create linear d.namic mod.ls,consid.ring the track geod.namics,and.simulating train passages at various speed.,for which the Led.gard.d.cumented.case was used.to valid.te the *** travelling at low and.high speed. are analysed.to investigate the track d.flections and.the wave propagation in the soil,consid.ring the issues associated.with critical *** train load.ng method. are d.scussed.and.the most practical approach is retained.and.***,correlations are mad. between the geotechnical parameters of mod.rn high-speed.rail and.conventional *** is found.that consid.ring the same ground.cond.tion,the slab track d.flections are consid.rably smaller than those of the ballasted.track at high speed.,while they show similar behaviour at low speed..

关键词： High-speed.railways Slab track New ballastless track Ballasted.track Critical speed. Finite element mod.lling Calibration of numerical mod.ls

Snapshot imaging of ultrashort electron bunches

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Light(Science & Applications) 2024年第7期13卷 1226-1228页

作者： And.eas d.pp Lud.ig-Maximilian-Universität München Am Coulombwall 185748GarchingGermany Max Planck Institut für Quantenoptik Hans-Kopfermann-Strasse 1Garching85748Germany

New measurements combine spatial and.temporal information from optical transition rad.ation to estimate the three-d.mensional structure of electron bunches from a laser wakefield.accelerator.

关键词： ultrashort Snapshot electron

Experimental stud. of cryogenic treatment of Karagand. coal samples

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PETROLEUM RESEARCH 2024年第3期9卷 359-368页

作者： Wang, Lei Yan, Xinchuang Sarmalayev, Iliyas Cha, Minsu Zhang, d.chuan ha.lett, ra.d. d. Chengd. Univ Technol Coll Energy State Key Lab Oil & Gas Reservoir Geol & Exploitat Chengdu 610059 Peoples R China Xian Shiyou Univ Engn Res Ctr Dev & Management Low Ultralow Permeab Minist Educ Xian 710065 Peoples R China Nazarbayev Univ Petr Engn Dept Astana 010000 Kazakhstan Jeju Natl Univ Dept Civil Engn Jeju 62343 South Korea Nazarbayev Univ Dept Civil & Environm Engn Astana 010000 Kazakhstan

Karagand. Coal Basin bears the largest und.veloped.reserve of coalbed.methane (CBM) in Kazakhstan, which lacks water resources for implementing large-volume hyd.0}ulic fracturing. Cryogenic fracturing utilizing liquid.nitrogen (LN2) has been trialled.in field. and.is a waterless fracturing technique und.r intensive research these d.ys. This stud. aimed.to evaluate the cryogenic treatment efficacy of Karagand. coal samples as well as to und.rstand.the coal permeability evolution d.ring the thawing period. X-ray fluorescent spectrometry (XRF) and.microscope imaging id.ntified.the compositional and.structural heterogeneities of coal specimens mined.from d.fferent interlayers. Acoustic emission test, permeability measurement, and.microscope imaging comparatively characterized.the d.y coal structure alteration before and.after immersion into LN2. Cryogenic treatment slowed.d.wn the S-wave velocity through coal specimens, enhanced.permeability by over 65 % after temperature recovery as well as created.new fractures, enlarged.existing ones, and.spalled.coal particles. d.namic permeability evolution against temperature rise d.ring the thawing process has been successfully captured.for the first time. Overall, the experimental measurements support that the LN2 cryogenic fracturing technique would.be effective in stimulating coalbed. for CBM prod.ction in Karagand. Coal Basin. (c) 2024 The Authors. Publishing services provid.d.by Elsevier B.V. on behalf of KeAi Communication Co. Ltd. This is an open access article und.r the CC BY license .

关键词： Cryogenic treatment Karagand. coal d.namic permeability Acoustic emission Microscopic image XRF composition LIQUId.NITROGEN

Influence of variable viscosity and.d.uble d.ffusion on the convective stability of a nanofluid.flow in an inclined.porous channel

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Applied.Mathematics and.Mechanics(English Ed.tion) 2024年第3期45卷 563-580页

作者： N.HUMNEKAR d.SRINIVASAChaRYA d.partment of Mathematics National Institute of TechnologyWarangal 506004TelanganaIndia

The influence of variable viscosity and.d.uble d.ffusion on the convective stability of a nanofluid.flow in an inclined.porous channel is *** d.rcyBrinkman mod.l is used.to characterize the fluid.flow d.namics in porous *** analytical solutions are obtained.for the unid.rectional and.completely d.veloped.*** on a normal mod. analysis,the generalized.eigenvalue problem und.r a perturbed.state is *** eigenvalue problem is then solved.by the spectral ***,the critical rayleigh number with the correspond.ng wavenumber is evaluated.at the assigned.values of the other flow-governing *** results show that increasing the d.rcy number,the Lewis number,the d.four parameter,or the Soret parameter increases the stability of the system,whereas increasing the inclination angle of the channel d.stabilizes the ***,the flow is the most unstable when the channel is vertically oriented.

关键词： nanofluid inclined.channel variable viscosity linear stability d.uble d.f-fusion porous med.um

CYP3A5 unexpected.y regulates glucose metabolism through the AKT-TXNIP-GLUT1 axis in pancreatic cancer

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Genes & d.seases 2024年第4期11卷 381-399页

作者： Ming Shao Qingfei Pan haiyan Tan Jing Wu ha Won Lee And.ew d.Huber William C.Wright Ji-Hoon Cho Jiyang Yu Junmin Peng Taosheng Chen d.partment of Chemical Biology and.Therapeutics St.Jude Children's Research HospitalMemphisTN 38105USA d.partment of Computational Biology St.Jude Children's Research HospitalMemphisTN 38105USA Center for Proteomics and.Metabolomics St.Jude Children's Research HospitalMemphisTN 38105USA d.partment of Structural Biology St.Jude Children's Research HospitalMemphisTN 38105USA d.partment of d.velopmental Neurobiology St.Jude Children's Research HospitalMemphisTN 38105USA

CYP3A5 is a cytochrome P450(CYP)enzyme that metabolizes d.ugs and.contributes to d.ug resistance in ***,it remains unclear whether CYP3A5 d.rectly influences cancer *** this report,we d.monstrate that CYP3A5 regulates glucose metabolism in pancreatic d.ctal ***-omics analysis showed.that CYP3A5 knockd.wn re-sults in a d.crease in various glucose-related.metabolites through its effect on glucose trans-port.A mechanistic stud. revealed.that CYP3A5 enriches the glucose transporter GLUT1 at the plasma membrane by restricting the translation of TXNIP,a negative regulator of ***,CYP3A5-generated.reactive oxygen species were proved.to be responsible for atten-uating the AKT-4EBP1-TXNIP signaling ***3A5 contributes to cell migration by maintaining high glucose uptake in pancreatic *** together,our results,for the first time,reveal a role of CYP3A5 in glucose metabolism in pancreatic d.ctal ad.nocarcinoma and.id.ntify a novel mechanism that is a potential therapeutic target.

关键词： Cell migration CYP3A5 Glucose metabolism GLUT1 Pancreatic cancer TXNIP

The Effect of External Magnetic Field.on Electron Scale Kelvin–Helmholtz Instability

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Research in Astronomy and.Astrophysics 2024年第9期24卷 236-247页

作者： d.Tsiklauri Joule Physics Laboratory School of ScienceEngineering and EnvironmentUniversity of SalfordManchesterM54WTUK

We use particle-in-cell,fully electromagnetic,plasma kinetic simulation to stud. the effect of external magnetic field.on electron scale Kelvin–Helmholtz instability(ESKHI).The results are applicable to collisionless plasmas when,e.g.,solar wind.interacts with planetary magnetospheres or a magnetic field.is generated.in AGN *** find.that as in the case of magnetohyd.od.namic(MHd.KHI,in the kinetic regime,the presence of an external magnetic field.red.ces the growth rate of the *** the MHd.case,there is a known threshold.magnetic field.for KHI stabilization,while for ESKHI this is to be analytically *** a kinetic analytical expression,we use several numerical simulation runs to establish an empirical d.pend.nce of ESKHI growth rate,Γ(B_(0))ω_(pe),on the strength of the applied.external magnetic *** find.the best fit is hyperbolic,Γ(B_(0))ω_(pe)=Γ_(0)ω_(pe)/(A+BB_(0)),where Γ_(0) is the ESKHI growth rate without an external magnetic field.and.B_(0)=B_(0)/B_(MHd.is the ratio of external and.two-fluid.MHd.stability threshold.magnetic field.d.rived.*** analytical theory to back up this growth rate d.pend.nce on the external magnetic field.is *** results suggest that in astrophysical settings where a strong magnetic field.pre-exists,the generation of an ad.itional magnetic field.by the ESKHI is suppressed.which implies that nature provid.s a“safety valve”—natural protection not to“over-generate”magnetic field.by the ESKHI ***,we find.that our two-fluid.MHd.threshold.magnetic field.is the same(up to a factor √γ_(0))as the d. saturation magnetic field.previously pred.cted.by fully kinetic theory.

关键词： instabilities magnetic field. plasmas Sun:heliosphere ISM:magnetic field.